Jupyterlab-code-formatter

**Server extension**

No Changes

**Jupyterlab extension**

- Address Jupyter lab 2.0.0 breaing changes;

**Server extension**

- Defer trailing newline removal to labextension;
- Prohibit mismatched lab and server extension usage;

**Jupyterlab extension**

- Make tool bar format all button respect where it's clicked;
- Delete trailing newline for notebook cells only;
- Prohibit mismatched lab and server extension usage;

**Server extension**

- Handle :code:`indent_by` and :code:`start_comments_with_one_space` for styler;
- Unify magic and semicolon handling for Python formatters;

**Jupyterlab extension**

- Handle :code:`indent_by` and :code:`start_comments_with_one_space` for styler;

**General**

- Various fixes to docs;
- Various fixes to Makefile;

**Server extension**

- Fix optional :code:`rpy2` import crashing server extension;

**Jupyterlab extension**

No changes.

No change, simply fixing versioning error.

**Server extension**

- Fix missing `rpy2` import error;
- Add tests;

**Jupyterlab extension**

- Major refactoring;
- Temporarily removed language filtering for command palette;
- Tooltip format notebook changed to icon - thanks to mlucool;

**General**

- Project reorgnaisation;
- Use nix for local development environment;
- Documentation generation;